Very Mild ls1 for new driver
Very Mild ls1 for new driver I am building a pro touring 70 Camaro for a good friend of mine, we are putting a 98 LS1/4L60E, its getting a full suspension upgrade, C5 corvette brakes, racing seats with 5 point harness, ...
Needless to say he's wanting to do a little to the motor while its sitting on the stand so we talked about cams and possible intake manifold swap to gain a little more hp/torque.
Any good recommendations on where I should go with this? He doesn't want to build trans right now because most of the budget is going into suspension and brakes first (my rule for him being new to cars, gotta be able to steer and stop safely before you haul the mail!). This will be a daily driver/autocross/cruising car.
Needless to say he's wanting to do a little to the motor while its sitting on the stand so we talked about cams and possible intake manifold swap to gain a little more hp/torque.
Any good recommendations on where I should go with this? He doesn't want to build trans right now because most of the budget is going into suspension and brakes first (my rule for him being new to cars, gotta be able to steer and stop safely before you haul the mail!). This will be a daily driver/autocross/cruising car.
228r is a proven cam but I would go with a cam on milder lobes being you stated it's pro touring car. the BTR 223/230 would sweet. yes you need to change springs and pushrods. Send the stock injectors to FIC injector and have them bumped up to 36lb for room to go. they provide the correct IFR data for easy tuning.
another question, are the stock ls1 rocker arms gonna cut it with a spring/pushrod change? Probably get some beehive springs and harden pushrods, just wanna make sure the LS has a long healthy life. KingLT, would that BTR cam be good for autocrossin this car? I think it should weigh around 3600 lbs with driver when done?
I think the BTR cam would be much better for auto crossing...it will be much easier on the valvetrain, which is key for a motor that will spend a lot of time at higher rpm. stock rockers with a trunion upgrade is fine for either cam mentioned so far. BTR or TSP can set you up with a good package call them.
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Did you do the Ls6 pump upgrade or switch to the Melling oil pump?
Just as another precaution i thought i would put new main and rod bearings in the bottom end while I have it on the engine stand? good call you think?
Just as another precaution i thought i would put new main and rod bearings in the bottom end while I have it on the engine stand? good call you think?
If the engine is on a stand yes no brainer....on a very low mileage 01+ LS1 you could probably get by with the stock stuff. Most recommend pump and chain upgrades because 1) most LS1's are higher mileage these days, 2) 98-00 cars had problems with stock pumps failing after swapping cams, 3) it's cheap insurance. I was told being my 02 LS1 only has 17,000 miles I could stick with the stock chain and pump for a mild h/c/i upgrade. I still went ahead and bought a LS2 chain and LS6 pump.
Imo, without a higher stall TC, the largest cam I'd go would be like a 212/218 115lsa +0, it'll run stock like smooth with -15* overlap, and probably hit peak hp in thee 6000-6100rpm range with a IVC of 41, but would still benefit from a higher stall TC like a 3200 stall. For intakes I'd run ls6 or if you don't mind running a heavier intake a BBK SSI which, will make a little bit more power, and cost about the same price. I'd also suggest a set of Long tube headers With a 3200 stall TC a 224/228 113+4 would work very good with the same ivc of 41, but with a noticeable cam sound with 0* overlap while still being very daily driver friendly. If he would be going with a higher stall TC when he rebuilds the trans later, then I'd hold off on the cam for now, still get a better intake manifold and long tube headers now.
Cam choice will depend on the TC stall size, whether he's running stock exhaust manifolds (shorties) or LT headers, how smooth or rough he wants the engine to run, and how high he want to spin it, and where he wants to see the most power gains.
Here's the small cam I made reference to:
http://www.ws6project.com/user_stor/...-lift-212-218/
Cam choice will depend on the TC stall size, whether he's running stock exhaust manifolds (shorties) or LT headers, how smooth or rough he wants the engine to run, and how high he want to spin it, and where he wants to see the most power gains.
Here's the small cam I made reference to:
http://www.ws6project.com/user_stor/...-lift-212-218/
Last edited by 99Bluz28; Dec 18, 2014 at 11:49 PM.
yeah we are going to run the LT's for sure, he wants to run the QTP electronic cuttouts too. I havn't read up on the BBK intake, I will do that. He is debating now raising the budget a little to trade in the 4l60e for a build 4l80e, i think we have a lead on one for around $1000 fresh out of the shop, probably would be a good investment then he can do heads and a cam and get his 400 mark safely without destroying a trans
4l80 will add a lot of weight...no need to get away from a built 60 unless you plan on making big power... North of 700whp. Adding power and weight is counter productive and ends up being harder on other parts in the long run.
so it will be better to run a built 4l60e? i thought the 80 would be bulletproof. we are shaving weight all over throughout the suspension and the ls1 isn't going to weigh a ton, he just wants longevity out of it.
FYI, the BTR Stage I 223/230115lsa+2 still used Comp Cams LSL intake lobes so it's still fairly aggressive., and that cam is still going to need a higher stall TC. I'd run at least a 3k . For long term reliability and mild cam lobes with virtually any lift you want look at Cam Motion cams.
http://www.cammotion.com/index.php
http://www.cammotion.com/index.php
Last edited by 99Bluz28; Dec 19, 2014 at 12:06 AM.